CN101811843A - Novel reduction compacting agent special for concrete - Google Patents
Novel reduction compacting agent special for concrete Download PDFInfo
- Publication number
- CN101811843A CN101811843A CN 201010131664 CN201010131664A CN101811843A CN 101811843 A CN101811843 A CN 101811843A CN 201010131664 CN201010131664 CN 201010131664 CN 201010131664 A CN201010131664 A CN 201010131664A CN 101811843 A CN101811843 A CN 101811843A
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- CN
- China
- Prior art keywords
- concrete
- water
- compacting agent
- admixture
- deionized water
- Prior art date
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- 239000004567 concrete Substances 0.000 title claims abstract description 62
- 230000009467 reduction Effects 0.000 title claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 51
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000008367 deionised water Substances 0.000 claims abstract description 11
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 11
- 230000008602 contraction Effects 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 9
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical class [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 8
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 8
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000013530 defoamer Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 13
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 12
- 235000019353 potassium silicate Nutrition 0.000 claims description 12
- 230000001603 reducing effect Effects 0.000 claims description 9
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 9
- 239000005864 Sulphur Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- -1 alkyl phenol Chemical compound 0.000 claims description 6
- 229920001427 mPEG Polymers 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 5
- UXFQFBNBSPQBJW-UHFFFAOYSA-N 2-amino-2-methylpropane-1,3-diol Chemical compound OCC(N)(C)CO UXFQFBNBSPQBJW-UHFFFAOYSA-N 0.000 claims description 4
- 239000004111 Potassium silicate Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 claims description 3
- 229910052912 lithium silicate Inorganic materials 0.000 claims description 3
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 claims description 3
- 229910052913 potassium silicate Inorganic materials 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 229960004418 trolamine Drugs 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 3
- XVMKPAOMLRZJBQ-UHFFFAOYSA-N 2-methylpropanoic acid;propane-1,2-diol Chemical compound CC(O)CO.CC(C)C(O)=O XVMKPAOMLRZJBQ-UHFFFAOYSA-N 0.000 claims description 2
- 238000005336 cracking Methods 0.000 abstract description 11
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract description 3
- 238000002474 experimental method Methods 0.000 abstract description 2
- 239000002202 Polyethylene glycol Substances 0.000 abstract 2
- 239000003054 catalyst Substances 0.000 abstract 2
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 abstract 2
- 229920001223 polyethylene glycol Polymers 0.000 abstract 2
- 229940051841 polyoxyethylene ether Drugs 0.000 abstract 2
- 229920000056 polyoxyethylene ether Polymers 0.000 abstract 2
- 239000011550 stock solution Substances 0.000 abstract 2
- 230000003628 erosive effect Effects 0.000 abstract 1
- 239000011259 mixed solution Substances 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 13
- 230000008961 swelling Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 239000002131 composite material Substances 0.000 description 6
- 230000006378 damage Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000008595 infiltration Effects 0.000 description 4
- 238000001764 infiltration Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 159000000013 aluminium salts Chemical class 0.000 description 2
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 150000003841 chloride salts Chemical class 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 229910021653 sulphate ion Inorganic materials 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OVSKIKFHRZPJSS-UHFFFAOYSA-N 2,4-D Chemical compound OC(=O)COC1=CC=C(Cl)C=C1Cl OVSKIKFHRZPJSS-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- NTWZYMJGDYYGNL-UHFFFAOYSA-N [Na].C[Si] Chemical compound [Na].C[Si] NTWZYMJGDYYGNL-UHFFFAOYSA-N 0.000 description 1
- WOMHNGGYLYKJNN-UHFFFAOYSA-N [SiH3][O-].[Na+].[F] Chemical class [SiH3][O-].[Na+].[F] WOMHNGGYLYKJNN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012456 homogeneous solution Substances 0.000 description 1
- 230000000887 hydrating effect Effects 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910001387 inorganic aluminate Inorganic materials 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 235000012204 lemonade/lime carbonate Nutrition 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- GRLPQNLYRHEGIJ-UHFFFAOYSA-J potassium aluminium sulfate Chemical compound [Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GRLPQNLYRHEGIJ-UHFFFAOYSA-J 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000344 soap Chemical class 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0046—Premixtures of ingredients characterised by their processing, e.g. sequence of mixing the ingredients when preparing the premixtures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/16—Sulfur-containing compounds
- C04B24/161—Macromolecular compounds comprising sulfonate or sulfate groups
- C04B24/166—Macromolecular compounds comprising sulfonate or sulfate groups obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/32—Polyethers, e.g. alkylphenol polyglycolether
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0004—Compounds chosen for the nature of their cations
- C04B2103/0006—Alkali metal or inorganic ammonium compounds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0004—Compounds chosen for the nature of their cations
- C04B2103/0006—Alkali metal or inorganic ammonium compounds
- C04B2103/0007—K
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0004—Compounds chosen for the nature of their cations
- C04B2103/0006—Alkali metal or inorganic ammonium compounds
- C04B2103/0008—Li
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/42—Pore formers
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/56—Opacifiers
- C04B2103/58—Shrinkage reducing agents
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to the technical field of concrete admixture. The admixture is prepared by the following steps of: preparing stock solution which consists of deionized water, sodium hydroxide solution, sulfur powder and a catalyst, wherein the catalyst is a mixed solution of methoxy polyethylene glycol, dimethyl-1,3-malonic acid and alkylphenol polyoxyethylene ether sodium sulfates; and preparing inorganic waterproof reduction compacting agent consisting of deionized water, the stock solution, the dimethyl-1,3-malonic acid, the methoxy polyethylene glycol, the alkylphenol polyoxyethylene ether sodium sulfates, triethanolamine, silicate and defoamer DF-642. The compacting agent is in low admixture, and experiments prove that when the admixture is between 0.1 and 2 percent, early contraction of concrete can be effectively reduced, cracking risk can be reduced, compactness of the concrete can be improved, a porous structure can be improved to realize the function of water resistance and leakage prevention, so that the durability of the concrete on physical and chemical erosion is improved. The invention relates to an I-type waterproof compacting agent, which is most applicable in the engineering field requiring small concrete shrinkage cracking of the concrete and high compactness.
Description
Technical field
The invention belongs to technical field of concrete additives.Concrete can change by mix some material in concrete mix in the performance of newly mixing and stirring under the hardening state, and this has benefited from the develop rapidly of concrete admixture industry over nearest 50 years.There have been hundreds of additive products selling now on the market.In some country, 70%～80% concrete is mixed with one or more admixtures.
Admixture alters a great deal on component, from tensio-active agent and soluble salt to polymkeric substance and insoluble mineral.Generally, they are used to improve concrete workability, and accelerate or delay time of coagulation, control strength development and improve concrete unfreezing, temperature difference cracking, the alkali aggregate expands, the weather resistance of sulphate attack and steel bar corrosion.
Background technology
On modern civil engineering texture ratio such as bridge, harbour engineering, tunnel, railway, underground works, municipal fabrication, airport etc., concrete is most important material of construction.The weather resistance of fabrication more and more becomes the focus that people pay close attention to and study.Therefore, improve in the civil engineering structure concrete environment weather resistance down under arms, then become the major measure of raising works weather resistance.
Comprehensive, the concrete structure weather resistance of environment under arms probably can be divided into following several degradation mechanism:
(1) physical action: alternation of wetting and drying, freeze-thaw damage, shrinkage cracking, salt freezes destruction etc.;
(2) chemical action: chemical mediator corrodes, sulphate attack, carboniogenesis, steel bar corrosion, alkali etc.;
Concrete material itself is a kind of porous material, its void distribution in from the microcosmic hole of tens nanometers to the visible hole of millimetre-sized macroscopic view, and macroscopic crack etc.Studies show that above-described concrete degradation mechanism in time is all closely related in concrete perviousness, comprise that the perviousness of water, the perviousness of gas, various ionic are infiltrative.In the presence that does not have water, concrete destruction deterioration risk can reduce greatly.Therefore, improve concrete waterproof, barrier performance is the important measures that improve concrete durability always.
The factor relevant with concrete permeability mainly contains two: pore fluid of concrete structure and crack.
Improve the pore fluid of concrete structure, comprise the connectedness that reduces big hole number, reduces hole, the measures such as surface tension that reduce the concrete hole wall, can reduce intrusion and the infiltration of moisture in hole effectively.
The crack is another important factor that influences concrete permeability.The concrete that do not ftracture does not fully almost have.Thereby the volumetric shrinkage that the reason of concrete cracking probably has self-constriction, dry shrinkage to cause causes cracking; Thermal stress shrinkage cracking that causes owing to the concrete hydrating temperature rise etc.The volumetric shrinkage that these reasons cause is approximately 0.04%～0.06% of own vol.These shrink brings very big harm for concrete volume stability, weather resistance, and be embodied in: 1) crack on concrete is destroyed.2) concrete permeability resistance is bad causes seepage failure.3) the open crack of concrete has caused the steel bars in concrete corrosion.4) concrete contraction can influence concrete volume stability.Therefore by reducing the early stage volumetric shrinkage of concrete, be the important measures that reduce the concrete cracking risk.
For a long time, prevent and handle problems to be the problem that causes that engineering circle is paid attention to about fissured, general counter-measure is exactly an admixture swelling agent in concrete always.Swelling agent is that a kind of concrete (comprising mortar and cement paste) that makes in the cement setting process of setting produces controllable expansion to reduce the admixture that shrinks.Its rely on self chemical reaction or with the reaction of other compositions of cement, produce certain confined expansion in hydration period, with the contraction of compensating concrete.
The swelling agent kind of using on the engineering is more at present, chemical ingredients and expansion principle different according to them are broadly divided into following a few class: sulplo-aluminate is that swelling agent, lime swelling agent, iron powder are conventional expanded agent such as swelling agent, magnesium oxide type swelling agent, compound swelling agent.
Swelling agent is mainly used in for minimizing dry shrinkage expansive concrete with in order to utilize bulging force to prepare self-stressing concrete.Expansive concrete is used for the seepage control and crack resistance of buildings, tank, retention basin, road surface, slab bridge face, underground works etc.
The purpose of using cement expansive material is: 1) improve concrete crack resistance, reduce and prevent fissured appearance; 2) block the infiltration of concrete pore, improve concrete impervious grade standard; 3) make over-long reinforced concrete structure keep continuity, satisfy the architectural design requirement; 4) do not establish the post-cast strip to speed up the work, prevent to handle the bad vault infiltration that causes because of the post-cast strip.
But the above traditional expansion economization agent effect is single, volume is bigger, be generally the 5%-10% of cement amount in the concrete, and have the risk of late expansion, the lesson of existing many cases engineering failure, mix swelling agent and cause the excessive cracking of concrete late expansion, quickened the damage of structure.Therefore, at present in engineering practice the use of swelling agent be still very careful.
In addition, the present water-resisting agent product category of China is more, inorganic water-proof agent is arranged, organic waterproof agent and composite water-proof agent.Effect is many to reduce hole and filling capillary channel, and it is main reducing the perviousness of material under hydrostaticpressure.Wherein inorganic water-proof agent mainly comprises chloride salt water-resisting agent, water glass system (water glass class) water-resisting agent, aluminium salt water-resisting agent and other inorganic water-proof agents.More common chloride salt water-resisting agent has water-resisting agents such as calcium chloride water-resisting agent, iron(ic) chloride water-resisting agent, aluminum chloride, such water-resisting agent energy and C
3A, generation indissolubles such as calcium hydroxide are separated the colloid material, fill and seal the micropore between the cement sandstone, improve the density and the impermeability of cement stone; Water glass system (water glass class) water-resisting agent is many to be that base-material is aided with configurations such as copper sulfate, potassium aluminium sulfate and forms oily liquids with water glass, mainly be to utilize water glass and hydrated cementitious product calcium hydroxide to generate insoluble Calucium Silicate powder, stop up capillary channel, improve the cement density, wherein Sulfates then plays the effect that promotes cement to produce gelatinous mass; Inorganic aluminate water-proof agent is many to be main raw material with aluminium salt and lime carbonate, is aided with plurality of inorganic salt, and volume is generally the 3%-5% of cement consumption.But use the concrete pouring conditional request height of inorganic salts water-resisting agent, also may produce corrosion, and the later stage waterproof effect is bad concrete reinforcement.
Organic class water-resisting agent is tensio-active agent normally, can be divided into hydrophobic nature fluidizer, emulsion water-proof agent and trifling dose.Product has methyl silicon sodium alcoholate, fluorine sodium silanolate, trolamine class, soap class, rubber latex etc., but because such water-resisting agent amount of air entrainment is too big, concrete strength is had detrimentally affect.
Though and composite water repellent is being used the characteristics that combine the good organic waterproof material of inorganic waterproof material, present product type diversity is few, environment for use is required high.Secondly in engineering was used, most water-resisting agents can strengthen contraction, are the one of the main reasons that causes concrete cracking and shrink excessive.See that with physical condition at present product has powdery and liquid, but is this product volume height of powder-like product mostly, generally about 5%, have up to 8%-10%.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of multifunctional inorganic waterproof contraction reducing type compacting agent.
The invention is characterized in that described method contains following steps successively
Step (1) preparation stoste
The solution uniform mixing of deionized water shown in the following proportioning and sodium hydroxide, in described mixing solutions, add sulphur powder and catalyzer then and stir 10～15min, slowly be warming up to 70 ℃～90 ℃ again, continue to stir 40～60min, looking described mixing solutions takes on a red color and does not have precipitation and the time stop heating and stir, obtain preparing the stoste that the inorganic water-proof contraction reducing type compacting agent is used after the cooling, the proportioning of described each component is as follows:
Deionized water: 320g,
Sodium hydroxide solution: 40wt%, 200～400g,
Catalyzer: 25g～50g is 15% methoxy poly (ethylene glycol) by the total mass mark, dimethyl-1, and ammediol and alkyl phenol polyethenoxy ether sodium sulfate mixing solutions are formed, and wherein three's pure substance mass ratio was followed successively by 1: 2: 2,
Sulphur powder: 117g～210g,
Step (2) preparation inorganic water-proof contraction reducing type compacting agent
By following material proportioning mixing and stirring promptly:
Deionized water: 100g,
The stoste that step (1) obtains: 50g～100g,
Dimethyl acetic acid propylene glycol: 0g～10g,
Methoxy poly (ethylene glycol): 10g～0g,
Alkyl phenol polyethenoxy ether sodium sulfate: 0g～10g,
Trolamine: 0g～5g,
Water glass or potassium silicate or lithium silicate: 10g～0g,
Defoamer DF-642:0g～1g.
Technique effect of the present invention is to significantly improve the impervious cracking that shrinks, prevents with minimizing.It is the compound composition of inorganic materials and water soluble organic substance, under low-dosage (be present like product 1/tens to 1/tens), by analyse certainly nano particle fill concrete micropore or and concrete in material generation chemical reaction, generate and to have the closely knit material that expands.Its major functions and features is that volume is little, and it is obvious to reduce the anticracking effect, and does not have other adverse side effect.The silicon that contains in this agent and the cement, calcium, sodium, magnesium etc. are through chemical reaction, and the sulphur agglutinate and the xln of generation can effectively stop the water molecules infiltration, significantly improve intensity, and impervious pressure generally can reach 2.0Mpa, reaches as high as 4.0Mpa; Shrink 30%, especially in the low length of time, can reduce and shrink more than 50% in that bonding can be reduced more simultaneously, this ftractures very important for effective control.This product Modulatory character is big, the simple environmental protection of synthesis technique, and synthesis material economy is easy to get.This product appearance is an orange, stable homogeneous solution, PH11-13.Sealing is preserved.
Under laboratory condition, use beaker, agitator, instruments such as electric mantle synthesize this product.Relate to the chemically pure reagent that material is purchase, the setting of the amount of getting is the result for measuring through a large amount of concrete experiments.Synthetic stoste has possessed the good densification of reducing, in view of gained stoste and other water-soluble organic functions compounds have consistency preferably, and can not influence former effect, we carry out composite on the basis of stoste, obtain the more powerful and stable composite product of effect, function and reducing is closely knit, waterproof, functions such as resistance rust are the many types of densifying agent product of one.
Specific implementation method:
1, I type stoste
With deionized water shown in the following proportioning and sodium hydroxide (NaOH) solution uniform mixing, in solution, add sulphur powder and catalyzer then and stir 10～15min, slowly be warming up to 70～90 ℃, continue to stir 40～60min.Look solution and take on a red color and stop heating when not having precipitation and stir, after the cooling inorganic densifying agent mother liquor.That is:
Deionized water 320g sodium hydroxide solution (40wt%) 200g～400g
Catalyzer 25g～50g (by the total mass mark is 15% methoxy poly (ethylene glycol), dimethyl-1, and ammediol and alkyl phenol polyethenoxy ether sodium sulfate mixing solutions are formed, wherein three's pure substance mass ratio was followed successively by 1: 2: 2)
Sulphur powder 117g～210g
Specific embodiment is:
The composite densifying agent of I type
With following formula I type stoste and each material mixing and stirring, get the composite densifying agent of I type, that is:
Deionized water 100g,
I type stoste 50g～100g,
Dimethyl-1, ammediol 0g～10g,
Methoxy poly (ethylene glycol) 0g～10g,
Alkyl phenol polyethenoxy ether sodium sulfate 0g～10g,
Trolamine 0g～5g,
Silicate (water glass, lithium silicate, potassium silicate) 0g～10g,
The France defoamer DF-642 0g～1g of Rhodia.
Specific embodiment is:
Above product has all carried out compressive strength rate according to water-resisting agent industry standard (JC474-2008), the getting up early shrinkage ratio, and tests such as chloride diffusion coefficient ratio, wherein the normal concrete proportioning is:
Cement: 330kg,
Medium sand: 744kg,
Stone (5～25mm): 1116Kg,
Water: 200kg,
Wherein detect concrete and all add densifying agent, test intensity, shrinkability and chloride diffusion coefficient each length of time with respect to cement quality 0.2%.
The The performance test results of each example is as follows:
Claims (1)
1. a novel reduction compacting agent special for concrete is characterized in that, described method contains following steps successively
Step (1) preparation stoste
The solution uniform mixing of deionized water shown in the following proportioning and sodium hydroxide, in described mixing solutions, add sulphur powder and catalyzer then and stir 10～15min, slowly be warming up to 70 ℃～90 ℃ again, continue to stir 40～60min, looking described mixing solutions takes on a red color and does not have precipitation and the time stop heating and stir, obtain preparing the stoste that the inorganic water-proof contraction reducing type compacting agent is used after the cooling, the proportioning of described each component is as follows:
Deionized water: 320g,
Sodium hydroxide solution: 40wt%, 200g～400g,
Sulphur powder: 117g～210g,
Catalyzer: 25g～50g is 15% methoxy poly (ethylene glycol) by the total mass mark, dimethyl-1, and ammediol and alkyl phenol polyethenoxy ether sodium sulfate mixing solutions are formed, and wherein three's pure substance mass ratio was followed successively by 1: 2: 2,
Step (2) preparation inorganic water-proof contraction reducing type compacting agent
By following material proportioning mixing and stirring promptly:
Deionized water: 100g,
The stoste that step (1) obtains: 50g～100g,
Dimethyl acetic acid propylene glycol: 0g～10g,
Methoxy poly (ethylene glycol): 10g～0g,
Alkyl phenol polyethenoxy ether sodium sulfate: 0g～10g,
Trolamine: 0g～5g,
Water glass or potassium silicate or lithium silicate: 10g～0g,
Defoamer DF-642:0g～1g.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102531458A (en) * | 2010-12-09 | 2012-07-04 | 苏笮斌 | Anti-crack and anti-corrosion plasticizer composition and preparation method thereof |
| CN102531452A (en) * | 2010-12-10 | 2012-07-04 | 苏笮斌 | Anti-corrosion anti-cracking reinforcing agent composition and preparation method thereof |
| CN102718553A (en) * | 2012-06-21 | 2012-10-10 | 北京龙阳伟业科技股份有限公司 | Waterproof concrete compacting agent and preparation method thereof |
| CN113831057A (en) * | 2020-06-23 | 2021-12-24 | 苏州万众建筑材料有限公司 | Concrete compaction reinforcing agent |
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| CA2354077A1 (en) * | 1998-12-10 | 2000-06-15 | Ronald Paul Gee | Stable aqueous emulsions of nonpolar silanes having constant particle size |
| CN101066853A (en) * | 2007-06-18 | 2007-11-07 | 江苏博特新材料有限公司 | Super plasticizer of polyether for rapid hardening concrete |
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| CA2354077A1 (en) * | 1998-12-10 | 2000-06-15 | Ronald Paul Gee | Stable aqueous emulsions of nonpolar silanes having constant particle size |
| CN101066853A (en) * | 2007-06-18 | 2007-11-07 | 江苏博特新材料有限公司 | Super plasticizer of polyether for rapid hardening concrete |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102531458A (en) * | 2010-12-09 | 2012-07-04 | 苏笮斌 | Anti-crack and anti-corrosion plasticizer composition and preparation method thereof |
| CN102531458B (en) * | 2010-12-09 | 2014-05-28 | 苏笮斌 | Anti-crack and anti-corrosion plasticizer composition and preparation method thereof |
| CN102531452A (en) * | 2010-12-10 | 2012-07-04 | 苏笮斌 | Anti-corrosion anti-cracking reinforcing agent composition and preparation method thereof |
| CN102531452B (en) * | 2010-12-10 | 2014-09-10 | 苏笮斌 | Anti-corrosion anti-cracking reinforcing agent composition and preparation method thereof |
| CN102718553A (en) * | 2012-06-21 | 2012-10-10 | 北京龙阳伟业科技股份有限公司 | Waterproof concrete compacting agent and preparation method thereof |
| CN102718553B (en) * | 2012-06-21 | 2014-04-16 | 北京龙阳伟业科技股份有限公司 | Waterproof concrete compacting agent and preparation method thereof |
| CN113831057A (en) * | 2020-06-23 | 2021-12-24 | 苏州万众建筑材料有限公司 | Concrete compaction reinforcing agent |
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Application publication date: 20100825 |